IndexedDB: Defer delete calls when there is a running upgrade

third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html

Index: third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
diff --git a/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html b/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
index d6f5f71821ba5320ab5004516fca35469d5918b4..1ba2cd3798c6fafd2730e9bafeb862340ca98f07 100644
--- a/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
+++ b/third_party/WebKit/LayoutTests/storage/indexeddb/empty-transaction-order.html
@@ -5,17 +5,6 @@
 <script src='resources/testharness-helpers.js'></script>
 <script>
 
-function expect(t, expected) {
-    var results = [];
-    return result => {
-        results.push(result);
-        if (results.length === expected.length) {
-            assert_array_equals(results, expected);
-            t.done();
-        }
-    };
-}
-
 indexeddb_test(
     (t, db) => {
         db.createObjectStore('store');